US2539005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorption process
Assignee: Union Oil Company of California
•
Filing: 1949-04-30
•
Granted: 1951-01-23
•
Expires: 1969-04-30
Abstract
No abstract record available.
Inventors
- 👤 Clyde H O Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:28
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/08; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/30; B01D2253/302; B01D2253/304; B01D2256/00; B01D2256/24; B01D2256/245; B01D2257/00; B01D2257/70; B01D2257/702; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D2259/40083; B01D2259/40086; B01D2259/40088; B01D53/04; B01D53/0462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1422007A
Cited
US1836301A
Cited
US1825707A
Cited
US2351214A
Cited
US2384311A
Cited
US2379195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |